I have some taste and smell, but it's not nearly "authentic". I used to love coolranch doritos. I tried one yesterday... I almost gagged because it was disgusting. Almost all chips I've liked before have that same type of taste. It's weird. No one so far has been able to come up with a cause. Unless I misunderstood how it was explained lol.

Do they expect this will improve over time or they don't know yet?

I can empathize, James, I can no longer smell or taste flavors at all. The only things I can taste are from the sections on the tongue that let you taste salty, sweet, sour and bitter. So texture of food has become important.